Cogito
Grade 1 Math · Chapter 5 · Lesson 7
Take From Ten in Stories
Use the same move on real problems.
10 problems · about 13 minutes · 1.OA.A.1, 1.OA.C.6
What this lesson teaches
The child solves take-from story problems within 20 using take-from-ten.
- Stories use the same take-from-ten move.
- Find the whole and split it.
- Take from the ten, then add the ones back.
Warm-Up Review
From earlier lessons. Loosen up before the new work.
4 problemsReview — Taking From Ten: 13 − 9 = ?
Answer 4
Why 13 − 9 = 1 + 3 = 4.
Review — Counting On or Making Ten?: 8 + 2 = ?
Answer 10
Why 8 + 2 = 10.
Review — Start With the Bigger One: 6 + 9 = ?
Answer 15
Why 9 + 6 = 10 + 5 = 15.
Review — Making Ten From Eight: 8 + 5 = ?
Answer 13
Why 8 + 5 = 10 + 3 = 13.
Warm Up
Straightforward practice. Get the method working first.
3 problems11 − 8 = ?
Answer 3
Why 11 − 8 = 2 + 1 = 3.
18 − 9 = ?
Answer 9
Why 18 − 9 = 1 + 8 = 9.
14 − 8 = ?
Answer 6
Why 10 − 8 = 2, plus 4.
Build It Up
The same ideas with more to keep track of.
1 problem17 − 9 = ?
Answer 8
Why 10 − 9 = 1, plus 7.
Stretch Yourself
Mixed problems. Work out what kind of question it is before you start.
2 problemsThe Sticker Sheet: Ana has 12 stickers. She gives away 8. How many does she have left?
Answer 4 stickers
Why 10 − 8 = 2, and 2 + 2 = 4.
The Fruit Bowl: There are 16 apples. 9 are eaten. How many are left?
Answer 7 apples
Why 10 − 9 = 1, and 1 + 6 = 7.